Grinding-mill



'3 Sheets-Sheet 1.

(No Model.)

J. S. WOODCOCK.

GRINDING MILL.

Patented Jan. 14, 1890.

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ATTORNEY N. PETERS, Piwwuimn hu, Wuhinglnn. D. c.

(No Model.)

3 Sheets-Sheet 2,

WOODCOCK.

GRINDING MILL.

Patented Jan. 14, 1890.

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(No Model.) 4 3 Sheets-Sheet 3.

.J". s. WOODCOCK. GRINDING MILL.

No. 419,394. Patented Jan. 14, 1890.

WITNESSES:

i INVENTOH:

' A TTOR/VEYS.

UNIT D STATES PATENT OFFICE.

JAMES S. WOODCOCK, OF NEWV LEXINGTON, OHIO.

GRINDING-MILL.

srnorrrcnrron forming part of Letters Patent No. 419,394, dated January14, 1890.

Application filed March 19, 1889. Serial 'No. 308,851. (No model.)

To all whom it may concern:

Be it known that 1, JAMES S. WOODCOCK, of New Lexington, in thecounty'of Perry and State of Ohio, have invented certain new and usefulImprovements in Grinding-Mills, of which the following is a full, clear,and exact description.

The invention relates to grindingmills such as shown and described inLett'ersPatentNo. 382,202, granted to me May 1, 1888. 4

The object of the invention is to provide certain new and usefulimprovements in grinding-mills, whereby the mill can be used either asan independent power for running other machinery or as a combined powerfor other machinery and a grinding-mill, or as a grinding-mill alone.

The invention consists of certain parts and details and combinations ofthe same, as will be fully described hereinafter, and then pointed outin the claims.

Reference is to be had to the accompanying drawings, formingapart ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the improvement. Fig.2 is aplan view ofthe same with the hood of the casing removed. 3 is a plan view of themain bevel gear-wheel. Fig. 5 is an inverted plan view of the same. Fig.4 is a plan view of the gear-wheel ring. Fig. 5 is a sectional sideelevation of the gearwheel ring and gear-wheel as connected with eachother. Fig. 6 is a sectional side elevation of one of the lugs of thering on the line w a of Fig. 4. Fig. 7 is a sectional side elevation ofthe cone and the dome-plate. Fig. 8 is an inverted plan view of the samewith parts of the cone broken off, and Fig. 9 is an enlarged face viewof the guide-rollers. Fig. 10 is a vertical central section of the mill.

The improved grinding-mill is provided with a casing A, supported onlegs-B, and is of similar construction to the mill shown in the patentabove referred to. On the inside of the casing A is held the stationaryshell, also similar to the one shown in the patent mentioned, and withinthis shell operates the cone G, provided on its inside with lugs 0,extending into corresponding notches D, formed in the periphery of thedome-plate D. In the lugs C are apertures located directly below thedome-plate, so that when the domeplate is placed in position on the conespringkeys E are inserted in the aperture of each lug C, so as to lockthe dome-plate securely in place on the cone. This simple connection ofthe cone and the dome-plate permits of quickly disconnecting the twoparts Whenever desired for convenient replacing of the cone whenevernecessary.

From the center of the dome-plate D projects upward a spindle F,provided near its upper end with recesses F, and fitting into anaperture G in a hub G, supported on the arms G projecting from theinside of the ring G providedin its periphery with outwardly-extendinglugs G each having an upwardly-turned flange G The ring G the arms G andthe hub G form the gear-ring. On the arms G may be secured knives G(shown in dotted lines in Fig. 4,) serving to cut the husk on the ear ofcorn, so that it will grind through the mill. On the lugs G are securedthe lugs H, projecting inward from the top of the main bevel-wheel I-I,having its bevel-teeth on the under side.

In the hub G are formed key-slots G corresponding to the slots F in thespindle F and adapted to register with the same, so as to permit ofinserting keys I. to fasten the said spindle F to the hub G. When thekeys I are inserted and the wheel H is turned, the cone 0 is rotatedinside of the casing A and operates in conjunction with the shell inorder to grind in the usual manner.

It will of course be understood that the keys I are keys only in thesense that they prevent the hub'fand the spindle from turning one on theother, for they do not interfere at all with the vertical movement ofthe spindle through the hub when the cone requires vertical adjustmentby the screw on its upper end. p

The main bevel gear-wheel H is provided with an outwardly-extendingannular flange H adapted to travel between sets of guiderollers J oneabove the other, one guideroller of each set being on top of the annularflange H and the other roller of the same set on the under side of thesaid annular flange. h (See Fig. 1.) Each set of guide-rollers J ismounted to turn on a vertical arm J, mounted to slide in suitableguideways K, fastened on-posts K, preferably secured to the legs 13 orto the frame on which the mill sets. From the lower end of each arm Joperates a cam lever L, fulcrumed on the respective post K and adaptedto raise or lower the arm J, so as to. raise or lower the gear-wheel IIand its connections; for the purposes hereinafter more fully described.In the arm J is a slot J through which passes a bolt J held in the postK. On the bolt J screws a nut J, which, when screwed up, serves to lockthe arm J in any desired position after being raised or lowered by thecam-lever L. (See Fig. 9.)

From three of the lugs H of the gear-wheel II project upward the studsN, N, and N respectively, each having a central bolt N projecting upwardand adapted to receive a nut N. The studs N and N and their bolts N areadapted to pass into corresponding apertures formed in the side beamsOand O of the power-frame 0, connected with each other by the transversebeam 0 into which passes the stud N and its bolt N as is plainly shownin Figfl. 1

hen the power-frame O is placed on the studs, the nuts N" are screwed onthe bolts N against the tops of the beams 0, O and 0 so as to secure thepower-frame O firmly to the top of the gear'wheel II. The animal ishitched to the outer end of the powcrframe 0, in the usual manner, forturning the mill.

Into the main bevel gear-wheel H is adapted to mesh a pinion P, securedon the inner end of a shaft Q, mounted to turn in suitable bearings heldin one of the posts K and in a standard U, secured on the floor on whichthe mill rests. The pinion P is provided with a key-slot, into whichfits the key Q on the shaft Q, so as to carry the pinion around and atthe same time permit a sliding motion of the said pinion, in order todisconnect it from the gear-wheel H whenever desired.

On the shaft Q is fastened a gear-wheel R, meshing into a pinion S,secured on the shaft T, mounted to turn in the post K and the standardU, and adapted to be connected by a universal joint Vwith othermachinery. A pulley \V is also placed on the said shaft, and is adaptedto be connected by a belt with other machinery to be driven. As theother parts of the machine are substantially similar to thecorresponding ones shown in the patent above referred to, a furtherdescription is deemed superfluous.

The operation is as follows: IVhen the operator desires to use themachine as a grinding-mill only, he moves the pinion P outward on theshaft Q, so as to disengage the pinion from the main gear-wheel I'l.\Vhen the animal attached to the powerframe 0 now sets the latter inmotion, the gear-wheel II, the ring G connected with said gear-wheel,and the hub G, connected with the said ring, rotate simultaneously,

and by means of the keys I, the spindle F, and the dome-plate D arecarried around, so that the cone 0, fastened to the said domeplate, alsorotates inside of the casing on the shell in orderto grind.

lVhen the operator desires to use the device as a -grinding-mill, asabove described, and at the same time as a power for driving othermachinery, he moves the pinion 1 into mesh with the gear-wheel H, as isplainly shown in Fig. 1. \Vhen the animal now turns the power-frame O,the grinding-wheel operates as above described, and at the same time arotary motion is imparted to the shaft Q by the bevel gear-wheel Hturning the pinion P, secured on the said shaft Q. The latter by thegear-wheel R and the pinion S imparts a rotary motion to the shaft T,from which the power may be transmitted in any suitable manner to themachine to be driven.

\Vhen the operator desires to use the machine only as a power, heremoves the keys I from the spindle F and the hub G, so that when theanimal turns the power-frame O the gear-wheel H, the ring G and the hubGare rotated; but the spindle F, on account of be ing disconnected fromthe hub G, remains stationary, and consequently the cone C does not turnand the mill proper is at a standstill. The gear-wheel l-I, however,rotates when the power-frame is turned, and consequently transmits itsmotion by the bevelpinion to the shaft Q, which latter, as abovedescribed, turns the shaft T, connected with the machinery to be driven.

Thus it will be seen that by very simple connections I am enabled to usethe machine as a grinding-mill or as an independent power, or as bothcombined. It is to be understood that the sets of friction-rollers Jsupport the gear-wheel H and its connections, so that the weight of thelatteris raised from the main casing A, upon which it would otherwiserest, and thus cause considerable friction. This friction is usuallyovercome when grinding grain by means of the grain passing into thecrevices between the ring G and the casing; but when using the machineas a power only, as above described, no grain passes through the mill,and consequently it is necessary to relieve the casing A from thefriction; This is done by slightly raising the gear-wheel II by the setsof rollers J, so as to make a clearancebetween the casing A and thering. The raising of the friction-rollers J is accomplished by means ofthe cam-lever L (see Fig. 9) being moved in an uppermost position, so asto raise the arm J, carrying the friction-rollers J. When the desired position is attained, the nut J is screwed up, so that the arm J issecurely locked in place on its supporting-post K.

It is to be further understood that the flanges G on the gear-ring lugsG" take up all lateral strain on the bolts connecting the lugs G" and IIwith each other.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. In a grinding-mill, the combination,-withthe casing, the shell and the cone therein, and a master-wheel connectedwith the spindle and provided with a sweep, of verticallyadjustable barsJ, each having upper and lower anti-friction wheels J J, between whichthe periphery of the said master-wheel extends.

2. The combination, with a grinding-mill having a horizontalmaster-wheel provided with a peripheral flange H and a sweep, of thevertical posts K at the sides of the mill, the vertically-adj ustableslotted bars J, mounted on said posts and havin clamping-bolts J anupper and a lower anti-friction wheel on each bar, between which thesaid flange extends, and levers L, pivoted to the posts and bearingagainst the said bars to raise and lower them, substantially as setforth.

. 8. The combination, in a grinding-mill, with the shell, the conetherein provided with a spindle, and the master-wheel connected directlyto the said spindle to rotate the cone and provided with gear-teeth onits lower face and a sweep, of the transverse power-transmitting shaftQ, provided with a sliding pinion P on said shaft and adapted to bethrown into and out of gear with the master-wheel, substantially as setforth. 7

4. A grinding-mill comprising the shell, the cone therein provided withan upward-extending spindle having a groove F extending downward fromits upper end, a masterwheel having a central hub receiving said spindleand provided with a vertical groove registering with the groove in thespindle, a key readily insertible in and removable from said grooves, asweep, and a power-transmitting shaft having a sliding pinion to bethrown into and out of gear with the masterwheel, substantially as setforth.

5. The combination, with the cone-dome having a flange around its baseprovided with peripheral recesses, of the cone having lugstransversely-apertured lugs 0 under said.

flange and the dome D, passed upward through the cone against saidflange, closing the upper end of the cone, and having peripheralrecesses D, through and below which the lugs extend, and a spindle onits upper side, and the pins passed horizontally through the aperturedlugs and against the under side of its flange, substantially as setforth.

7-. The combination, in a grinding-mill, with the shell and the conehaving a spindle, of the sweep or master-wheel comprising the outer opengear I-I, toothed on its lower face and provided withinwardly-projecting lugs H, the ring G within the wheel H and havingperipheral lugs G provided with ribsG along one side, vertical boltspassing through said lugs, the central hub G, through which said spindlepasses, and the arms G integral with the hub and ring, substantially asset forth. I

8. The combination, with the shell and the cone provided with a spindle,of a sweep or master -wheel having integral shouldered posts projectingfrom its upper face and a central hub receiving the spindle, boltsprojectin g from the upper ends of the posts, the sweeps provided withapertures into which the posts project as far as their shoulders, andnuts on said bolts clamping the sweeps in place on the posts,substantially as set fort JAMES S. WOODCOCK.

Witnesses:

H. F. AOKER, FRANK A. KELLY.

